Tire-chain



J. A. FIELDS AND J. J. WITTE.

TIRE cmim. APPLICATION FILED DEC.23. I918.

Patented Mar. 23, 1920.

will not only prevent s UNITED STATES PATENT oEEIoE.

JAMES A. FIELDS AND JESSIE J. WIT'IE, OF SAN ANTONIO, TEXAS.

TIRE-CHAIN.

Specification of Letters Patent.-

Patented Mnr.23,1920.

Application filed December 28, 1918. Serial Io. $68,017. i

To all whom it may concern: Be it known that we FIELDS and JESSIE JAMES wrr'rn, citizens of the United States, residing at San Antonio, in the county of .Bexar, State of Texas, have invented -a new and useful Tire-Chain, of which the followin is a specification.

This invention re ates to anti-skidchains for pneumatic tires, one of the objects of the invention being to rovide a chain whlch hiddin ,but will also grip the road surface to sue an extent as to increase the tractive war of the vehicle.

Another object is to provide a device of this character which can be applied easily and quickly without the use of anyspecial tools. A still further object is to rovide an antiskid device the chains of w ich are so connected as to have suiiicient relative movement to avoid stretching and breaking and to render them self adjusting toproperly distribute the strains.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts which will be hereinafter more fully described and ointed out in the claim, it being understood that various changes may be made in the construction and arrangement of the parts without departing from the spirit or sacrificing any of the advantages of thei'nvcntion as set forth in the appended claim.

In the accompanying drawings the' preferred form ofthe invention has con shown.

In said drawings 1 Figure 1 is a plan view of a portion of the device.

Fig.2 is an enlarged side elevation of a fastener and the adjacent portions of the side chain.

Fig. 3 is a plan view of a center ri portions of t e diverging diagonal c ains.

Fig. 4 is a plan view of the structure shown in Fig. 2.

Fig. 5 is a perspective view of one of the fastening levers.

Fig. 6 is an enlarged view of one of the side connections between the chains.

Referring to the figures by characters of reference, 1 designates the side chains of the device, said chains preferably being made of flat cut links alt understood that the chains can be of any JAMES Amann'r and ough it 'is to be other construction desired. One of the end links of each side chain engages an eye 2 formed at one end of a short stem 3 and extcndin at an angle therefrom. An arm 4 exten s from the other end of the stem at right angles thereto and is adapted normully to lie parallel with the adjacent porof the chain together as shown particularly.

in Fig. 4.

Connected to the side chains 1 at regular intervals are rings 6, and the corresponding rings on the two chains are connected by cross chains 7. In the centers of the spaces defined by the chains 1 and 7 are lin s 8. To these rings are connected the end links of diagonal chains 9 each of which extends from one ring 8 through one ring (5 and thence to the next adjoining ring 8. As shown in Fig. 6 chain 9 has one link extending through the ring 6 and thus has movement relative to the ring 6 substantially equal to the length of the link therein. The chains 9 are not connected to the rings 6 engaged by the and chains 7. Instead short diagonal chains 10 connect these end rings 6 to the adjacent rings 8.

In using the device the same is placed on an inflated tire in the usual way. the rings 5 first being disengaged from the arms 4 and said arms extended outwardly at angles from the chains 1. The free ends of said chains 1 are-then slipped onto the arms 4 and said arms swung inwardly about their connections with the chains at eyes 2 until the links have slid along the arms 4 and onto the stems 3. The arms 4 are thus brought parallel with the chains 1 and are held thereto by bringing the rings 5 into' stand greater strains than where the connections are positive, because the relative movement permits a yielding action which will prevent breakage. Because ofthe symmetrical arrangement. of the chains the device will be as efiicient during the backward movement of the wheel as during the forward movement thereof.

What is claimed is A chain attachment for tires including side chains, rings engaging the side chains at re lar intervals, cross chains connecting the rings and dividing the space between the side chains into separate rectangles, rings disposed at the centers of the spaces between the side -and cross chains, and a chain extendin loosely through each of the rings on t e side chains and secured natures in the presence of witnesses.

JAMES A. FIELDS. JESSIE J. WITTE.

Witnesses to signature of James A. Fields Josnrn R. Roexsnmvx, R. B. BOYD.

Witnesses to signature of Jessie J. Witte:

B. B. THoMPscN, I G120. R. THOMSON. 

